At the risk of sounding like a lawyer, the answer is ‘that depends’.  The usual starting position is that all current assets (including an inheritance) are included. In limited cases, the inheritance might be excluded but depends on your specific circumstances.

If your inheritance is included, it will generally be considered as an additional ‘contribution’ by you, meaning your percentage of the final split might be increased.

If or how much your share increases depends on lots of other factors, like the size of the inheritance compared to the rest of the assets, the length of your relationship, when the inheritance was received, all other contributions and both of your future needs.