Mercedes-Benz 190SL and the 1975 Monica
Both makes are named after a womans firstname who both where not directly involved in the production of these makes, but where only related to those who where
Mercedes named after Mercedes Jellinek, daughter of Emil Jellinek, the Austro-Hungarian consul in Nice, France, at the turn of the century. He stared to race cars under the name of his daughter and raced a with a Daimler Phoenix
He ordered 36 new Daimler race cars in 1900, who where to be designed to his wiches, with the demand they would be named Mercedes
The rest is history
Monica was a brand of luxury cars created in France in the 1970s by Jean Tastevin, a French industrialist whose wife's name was Monica