Analysis of information sources in references of the Wikipedia article "Godfrey of Bouillon" in English language version.
Duke Godfrey was born in the French kingdom, in the province of Reims, in the city of Boulogne by the English Sea. He was descended from illustrious and religious forebears. His father was the elder Lord Eustace, the famous and splendid Count of that region, whose many and memorable works are still recalled by the old men of the neighboring provinces and his memory as a religious and Godfearing man is like a blessing in the pious recollection of men. Duke Godfrey's mother was well-known among the noble matrons of the West, as much for her way of life as for her noble generosity. She was named Ida and was a sister of the exalted Duke Godfrey of Lorraine who was known as Struma. That Duke Godfrey, since he had no children, adopted his nephew Godfrey as his own son and bestowed his entire patrimony upon young Godfrey as his heir. Thus, when the elder Duke Godfrey died, the young Godfrey succeeded him as Duke.