Form III Biography

Paul, Apostle to the Nations from New Rome Press - Biography of the Apostle Paul, roughly 5 AD to 65 AD.

St. Raphael Hawaweeny - Biography of Bishop Raphael who ministered in North America from Canada to Mexico and established many congregations, living from 1860-1915.

The Life and Miracles of St. Benedict by Pope St. Gregory the Great - "The earliest recorded account of the life of St. Benedict, this seminal work brings together short stories of amazing and miraculous events attributed to St. Benedict, and provides a glimpse into the honor given to St. Benedict soon after his life of piety" (from the publisher's description). 480 to 547 AD.

The Life of St. Sava by St. Nikolai Velimirovich - St. Sava was born in 1173 and died in 1236 AD. In this volume, "St Nicholai writes about St Sava in a simple, moving, and clear manner. He uses his sources to convey the atmosphere and history of the time. Brief chapters are accompanied by his meditations on the meaning of particular events in the life of the saint" (from the publisher's description.)

Additional Recommendation: We don't have a history page published as yet, but some parents use The Orthodox Christian Church Through the Ages by Sophie Koloumzin (available on Archive.org) for church history, and it has some biographies of saints included.