Is there anyway I can access other people on my routers internet history?

I was trying to see what sites people on my router have been on and I was just wondering if it was possible and if it goes away when they delete internet history. We have 9 things connected (laptops, iPods, iPhone's, etc) so can I look separately for each device or is it all in one.

Nope

This is not possible, you would need to log on to there devices Internet browser and check history from there.

Internet history is stored on the devices cache, not on the router. The ISP (internet providers) have a log of every site you have accessed, so you might be able to contact them and ask them to send it to you, but they are under no obligation to do so. Basically, no, and the only practical way to check the history is manually on the specific device.

The amount and detail of logging will depend on your specific model and configuration. Some routers by default, only log router activity and not Internet requests (history). Depending on your motivation you can modify many routers firmware to allow more detailed results.http://www.makeuseof.com/tag/paranoid-monitoring-networks-comings-goings-wallwatcher-ddwrt/

Some wireless routers keep detailed traffic logs. These logs are raw data of Internet requests and IP addresses. This is not technically the same as your browser history file, however by examining the URL's requested by a specific device the history of sites that were visited can be reconstructed.

On many routers the log limit is very small ( a few hundred or less).

When this limit is reached older data is overwritten. On my router I have it configured to email the logs to a Gmail account when they are full and clear them. This gives me a complete record of of all router activity that I can examine for any specific date.

Any type of browser security such s Google Incognito mode will keep your local machine from storing your history, however has no effect on remote routers, proxy servers and connections.https://support.google.com/chrome/answer/95464?hl=en