It isn't too much to assume, but I suppose that depends on your definition of "notable." Elven births can be... rare. Many only have one child.
By the grace of the stars, perhaps, my grandparents had two daughters, and then their eldest - my aunt - had twins. My mother had a son by her first marriage to another elf, and then had my sister and I, but because our father is human, the likelihood of having us was... more. So my generation and that of my parents' certainly made our family larger, but elven longevity is not the reason that my family would be considered larger than other elven families.
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It isn't too much to assume, but I suppose that depends on your definition of "notable." Elven births can be... rare. Many only have one child.
By the grace of the stars, perhaps, my grandparents had two daughters, and then their eldest - my aunt - had twins. My mother had a son by her first marriage to another elf, and then had my sister and I, but because our father is human, the likelihood of having us was... more. So my generation and that of my parents' certainly made our family larger, but elven longevity is not the reason that my family would be considered larger than other elven families.