Fitzsimons rhymes with:
fitzsimmons, fitzsimmons, fitzsimmons, fitzsimmons, simmon's, simmons, simmons', symons, fitzsimmons, kimmons, nimmons, simmon's, simmons, simmons', symons, timmons, women's, womens'
Fitzsimons sounds like:
fatiguing, fetching, fitzsimmons, fudging