Jacobo Kyushei Tomonaga
St. Jacobo Kyushei Tomonaga was a Japanese Christian who dedicated his life to spreading the Gospel. He faced persecution for his faith and ultimately became a martyr, inspiring many with his courage and devotion.
- Feast day
- Aug 17
- Known as
- Martyr
- Era
- 17th-century Japan

Who they were
St. Jacobo Kyushei Tomonaga was born in the early 17th century in Japan, during a time when Christianity faced severe persecution. His family was part of the Japanese Christian community, which was thriving until the Tokugawa shogunate implemented strict policies against Christianity. Despite the dangerous environment, Jacobo embraced his faith wholeheartedly and sought to spread the Gospel.
As a young man, he displayed remarkable courage and dedication, becoming involved in the clandestine activities of the underground Church. He worked tirelessly to support fellow Christians and engage in missionary efforts, often at great personal risk. His commitment to his faith made him a well-known figure among the Christians in his region, where he was respected for his integrity and leadership.
In 1614, the persecution of Christians intensified, leading to widespread arrests and executions. St. Jacobo was eventually arrested for his faith. Despite the threats and torture aimed at him, he remained resolute in his beliefs. When offered the chance to renounce Jesus and escape punishment, he steadfastly refused, choosing instead to accept martyrdom rather than betray his Savior.
He was executed on August 17, 1620, alongside several other Christians, solidifying his place among the martyrs of Japan. St. Jacobo's bravery in the face of adversity and his unwavering faith stood as a beacon of hope for the Christian community in Japan, inspiring countless others to persevere in their own faith journeys.
Following his death, stories of his life and martyrdom circulated, contributing to the veneration of St. Jacobo among Catholics. He is honored for his exemplary witness to the power of faith in overcoming fear and persecution. His legacy continues to inspire individuals and communities pursuing the faith amidst challenging circumstances, reflecting the enduring power of love for Christ and a commitment to the Gospel.
Remembered for
St. Jacobo Kyushei Tomonaga is remembered for his unwavering faith in the face of extreme persecution. As a martyr, he courageously spread the Gospel despite significant dangers, inspiring both his contemporaries and future generations of Christians. His commitment to evangelization and his ultimate sacrifice reflect the virtues of bravery and steadfastness in the face of adversity.
His life serves as a profound example of the strength found in trusting God amid trials. The stories of his martyrdom significantly contributed to the understanding of faith under duress in Japan, particularly during the time when Christianity was heavily suppressed. Jacobo's legacy continues to inspire those facing their own challenges in living out their faith.
Aug 17
How to recognize them

- CrossRepresents St. Jacobo’s faith in Christ despite persecution.
- Japanese flagSymbolizes his heritage and commitment to spreading the Gospel in Japan.
- Martyr's palmA representation of his martyrdom and triumph in faith.
- BibleSignifying his dedication to the Word of God and evangelization.
- ShurikenA symbol of the trials he faced, associated with his time in Japan.
Pray with this saint
Holy Jacobo Kyushei Tomonaga, intercede for us as we strive to live out our faith. Help us to be courageous in proclaiming the Gospel, even in the face of adversity. May your example inspire our hearts to trust in God’s providence, and may we follow your footsteps with unwavering love and devotion.
For your household
Integrating St. Jacobo Kyushei Tomonaga into your family life can be a meaningful way to inspire faith and resilience among your children. Begin by discussing his remarkable story of martyrdom during family prayers or meal times, which can instill a sense of reverence and appreciation for the sacrifices made by those who lived their faith in difficult circumstances.
Consider celebrating his feast day on August 17 by sharing a special meal, perhaps one inspired by Japanese cuisine, and discussing stories of persistence and faith. You might create a family prayer tradition leading up to this day, encouraging each member to reflect on ways they can be bold in their faith.
In conversations with children, emphasize the importance of standing firm in their beliefs, using St. Jacobo’s experiences as a springboard for deeper discussions about courage and love for Christ amidst trials. Encourage them to think of St. Jacobo as a friend in heaven who they can ask for help when facing challenges. In times of suffering, particularly when dealing with struggles in faith or bullying, remind them to turn to St. Jacobo for strength and protection.
Pray as a household
Carry your family in prayer
Solua gives your family a simple, faithful rhythm of prayer — one unhurried moment at a time, for the people you carry by name.
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