"elder partner" is correct and usable in written English.
You can use it when speaking of two or more partners in a relationship. For example, "The elder partner was responsible for making the final decision."
He is set to partner elder statesman Samuel Eto'o, who remains Cameroon's all-time leading scorer with 55 goals.
1731, Paris) was the first of the line of instrument makers of the Blanchet family; after 1722 Nicolas and his son François the Elder worked as partners, producing instruments based largely on models of the Ruckers family, the great Flemish harpsichord makers.
The estate was valued at $12 million at the time, but a rash of lawsuits filed by the elder McCaw's partners laid claim to all but $20,000 of it.
In 1934 the elder Mr. Hinds and a partner, Enrique Carreras, started the company that would become Hammer Films.
Was it the fact that his elder sister, his study partner, finished second in her division, as runner-up to Shalhevet?
It is with profound sorrow that we note the passing of Edward Weinberg, elder brother, revered business partner, and beloved friend of James L. Weinberg, Chairman Emeritus of The Jewish Museum.
This paper focuses on the former, which includes child, intimate partner, and elder abuse (World Health Organization 2002), and also touches upon community violence of a sexual nature (e.g., rape by acquaintances and strangers).
His canvassing partner is Elder Kyle Hodson, who's 21.
This trend was contrary to the trends of elders' living with partners and with their children.
The prevalence of elders living with partners decreased from 1993 to 2007 by 19%, and that of living with their children decreased from 1993 to 2007 by 7%.
