Late 1860's - 1870's for a date.
Thanks Jim for the time frame, it helps with the project we are working on!

As you see the standing gentleman can be removed fairly easily, but how would you want the composition to be after removal? Mr Carey can be repositioned with a different background or the same background can be expanded. Using the same BG would be time consuming and difficult to look perfect, but could be done. Do you want the same border area in the vintage look or a solid i.e., white color? It'll be a fun picture to do, but nice to do it the way you want. The coloring can be done after all the corrections are finished.
John
Thanks John for your kindly offer of numerous options. If Neil was repositioned after the removal of the standing gentleman, I would be happy with any kind of background. I can understand that using the same background would be too time consuming, and seeing it is only a prop used by the photographer it is not necessary to retain it.
The vintage oval frame does give the photo an old feel, but once again, his appearance and clothing is a depiction of the times, as per Jim's estimate, late 1860's - 1870's, so there's no need to keep the frame for authenticity. I don't know how to restore or colour photo's so I really admire the talents of the clever people on this restoration board. The only thing I know how to do is crop an image.

So, your questions prompted me to crop the photo, which now helps me to explain what I would like. So, removal of the other gentleman, and a simple background with Neil cleaned up, without the oval frame. Thank you so much for making me extract my thoughts on what I would really like to see. Sorry for my drawn out explanation John, you should be a teacher, you made me think clearly about what I would like!