*The following table is the method I used to determine Jacob's age when he fathered Levi, and from there to estimate the ages at which the next three generations fathered their heir.

Reference	Event	Name	Age	Year
Gen 41:46	Joseph began ruling Egypt	Joseph is:	30
Gen 41:47	7 years of feast	Joseph is:	37
Gen 45:6	Jacob and sons enter Egypt after two years of famine	Joseph is:	39
Gen 47:9	Jacob is 130 years old, so 130-39=9, therefore:	Jacob's age at the birth of Joseph was:	91
Gen 31:41, Gen 30:25	Jacob worked for Laban 20 years, was married after the first 7 years, so in 13 years of marriage he had his first 11 children. Joseph was born in the last year	91-13=78, therefore Jacob's age when he married Leah and Rachel:	78
To accomplish 11 children in 13 years, the children were most likely born an average of about 1 per year. Jacob's first child was probably born about a year from his wedding night		Reasonable estimations --	Age:	Year:
		Jacob's age at Reuben's birth:	79	2247
		Jacob's age at Simeon's birth:	80	2248
		Jacob's age at Levi's birth:	81	2249

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