An attorney who rose to partner by virtue of his own “tenacity” and “perseverance,” has to hand over only 25 percent of the value of his partnership interest to his estranged spouse, a judge in Westchester, N.Y., has ruled.

During most of his nearly 30-year marriage, Stuart Fleischmann, a partner in Shearman & Sterling‘s capital markets group, was the sole breadwinner, while his wife, Toni, stayed at home with the couple’s three children, attended firm functions and hosted clients at their home.